<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form layout="inline" :model="param">
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="名称">
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({num: 1, size: pagination.pageSize})">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>
      </p>
      <a-table
          :columns="columns"
          :row-key="record => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >
        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar"/>
        </template>

        <template v-slot:category="{ text, record }">
          <span>{{ getCategoryName(record.category1Id) }} / {{ getCategoryName(record.category2Id) }}</span>
        </template>

        <template v-slot:action="{ text, record }">
          <a-space size="small">

            <router-link :to="'/admin/doc?ebookId='+record.id">
              <a-button type="primary">
                文档管理
              </a-button>
            </router-link>

            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                title="删除后不可恢复，确认删除?"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="danger">
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover"/>
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name"/>
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
            v-model:value="categoryIds"
            :field-names="{ label:'name', value:'id',children:'children'}"
            :options="level1"/>
      </a-form-item>

      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea"/>
      </a-form-item>
    </a-form>
  </a-modal>


</template>

<script lang="ts">
import {defineComponent, onMounted, ref} from 'vue';
import axios from 'axios';
import {message} from "ant-design-vue";
import {Tool} from "@/util/tool";

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value = {};
    const ebooks = ref();
    const pagination = ref({
      current: 1,
      pageSize: 3,
      total: 0
    });
    const loading = ref(false);
    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: {customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name'
      },
      {
        title: '分类',
        slots: {customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount'
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount'
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount'
      },
      {
        title: 'Action',
        key: 'action',
        slots: {customRender: 'action'}
      }
    ];

    /**
     * 数据查询
     **/
    const handleQuery = (params: any) => {
      loading.value = true;
      axios.get("/ebook/list", {
        params: {
          num: params.num,
          size: params.size,
          name: param.value.name
        }
      }).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          ebooks.value = data.content.list;
          // 重置分页按钮
          pagination.value.current = params.num;
          pagination.value.total = data.content.total;
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      handleQuery({
        num: pagination.current,
        size: pagination.pageSize
      });
    };

// -------- 表单 ---------
    //数组[100,101]对应 前端开发/ Vue
    const categoryIds = ref();
    const ebook = ref()
    const modalVisible = ref(false);
    const modalLoading = ref(false);

    //点击对话框中的提交按钮后
    const handleModalOk = () => {
      //显示加载条
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      //向后端发送post请求
      axios.post("/ebook/save", ebook.value).then((response) => {
        modalLoading.value = false;
        const data = response.data;  //data=CommonResp
        if (data.success) {
          modalVisible.value = false;
          //重新加载列表
          handleQuery({
            num: pagination.value.current,
            size: pagination.value.pageSize
          });
        } else {
          message.error(data.message);
        }
      })
    };

    /**
     * 点击编辑按钮
     */
    const edit = (record: any) => {
      //显示模态对话框
      modalVisible.value = true;
      ebook.value = Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id];
    };

    /**
     * 点击新增按钮
     */
    const add = () => {
      modalVisible.value = true;
      ebook.value = {};
    };

    //点击删除按钮
    const handleDelete = (id: number) => {
      //向后端发送delete请求
      axios.delete("/ebook/delete/" + id).then((response) => {
        const data = response.data;  //data=CommonResp
        if (data.success) {
          //重新加载列表
          handleQuery({
            num: pagination.value.current,
            size: pagination.value.pageSize
          });
        }
      });
    };

    const level1 = ref(); // 一级分类树，children属性就是二级分类
    let categorys: any;


    /**
     * 分类数据查询
     **/
    const handleQueryCategory = () => {
      loading.value = true;
      axios.get("/category/all").then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          categorys = data.content;

          level1.value = [];
          level1.value = Tool.array2Tree(categorys, 0);
          console.log("树形结构：", level1.value);

          //分类加载完之后再加载电子书
          handleQuery({
            num: 1,
            size: pagination.value.pageSize
          });

        } else {
          message.error(data.message);
        }
      });
    };

    //获取分类名称
    const getCategoryName = (cid: number) => {
      let result = "";
      categorys.forEach((item: any) => {
        if (item.id === cid) {
          result = item.name;
        }
      });
      return result;
    };


    onMounted(() => {
      handleQueryCategory();

    });

    return {
      param,
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      handleQuery,
      getCategoryName,

      edit,
      add,
      handleDelete,

      ebook,
      modalVisible,
      modalLoading,
      handleModalOk,
      categoryIds,
      level1
    }
  }
});
</script>

<style scoped>
img {
  width: 50px;
  height: 50px;
}
</style>